Kazakhstan’s largest oilfield has been forced into a temporary shutdown after fires damaged a critical power generation and distribution facility at the Chevron-operated Tengiz oilfield, extending a run of supply interruptions in Kazakhstan. Production and exports were halted following damage to site power systems serving the field and the adjacent Korolev oilfield, media cited Kazakh officials as stating on Monday.
The shutdown was confirmed by Upstream Online and Energy Intelligence, both citing official statements from operator Tengizchevroil and Kazakhstan’s state oil company KazMunayGaz. The operator said the outage followed an issue affecting parts of the site’s power distribution systems and reported no injuries, without providing guidance on restart timing.
KazMunayGaz said two fires broke out on January 18 at transformers serving different generation trains at the GTES-4 power plant, which supplies electricity to oil and gas processing facilities at Tengiz. Both fires were extinguished, and the field and related infrastructure were described as safe and secure.
The GTES-4 plant was commissioned in 2024 as part of the $47 billion Future Growth Project, a multi-year expansion designed to lift production capacity at Tengiz. Output from the field had been rising steadily following the project’s completion late last year, making the power disruption a notable interruption after years of capital-intensive investment.
The outage adds to a series of recent constraints on Kazakhstan’s oil sector. Production from the country’s largest fields was curtailed in December and again earlier this month due to capacity bottlenecks on the Caspian Pipeline Consortium system, the main export route for Kazakh crude.
Export pressure intensified after storage along the 1,500-kilometer pipeline network reached capacity, following disruptions at the Novorossiysk export terminal on Russia’s Black Sea coast. With limited alternative routes available, operational issues at Tengiz can quickly translate into broader export constraints.
Tengiz accounts for more than 40% of Kazakhstan’s oil and condensate production, with the country averaging about 2.1 million barrels per day between January and September 2025. The field’s shareholders include Chevron, ExxonMobil, Lukoil, and KazMunayGaz.
So far, official commentary has been limited. Statements from Tengizchevroil and KazMunayGaz have focused on personnel safety, ongoing technical assessments, and coordination with government authorities, while stopping short of outlining restart timelines or potential export losses.
By Charles Kennedy for Oilprice.com
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